The following statistics are based on version 8.5 of the BioSystematic Database of World Diptera. For the Palaearctic region this version contains a total of 63,149 species name records of which 40,291 (64%) represent valid species. 92% of the species are endemic to the Palaearctic region.

For statistics on other biogeographic regions click on the following links:
All Biotic Regions
Afrotropical Region
Australasian/Oceanian Region
Nearctic Region
Neotropical Region
Oriental Region

Source tables: valid species per family, valid species per year, name records per family, name records per year.